The gigantic coronal hole is blasting high-speed solar wind toward Earth, potentially igniting vibrant auroras and minor geomagnetic activity on Jan. 31. and Feb. 1.

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

At 19 gigaelectron volts, the lightsail could be pushed for 100 AU, which is nearly the edge of the Solar System. It’s possible that the craft could even be pushed up to an incredible 1,000 AU ...